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Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes [expression]

ABSTRACT: Examination of the genome-wide distribution of 5hmC in osteoarthritic chondrocytes compared to normal chondrocytes in order to elucidate the effect on OA-specific gene expression. 5hmC-sequencing was performed and data was compared with microarray gene expression data to identify genes with differential expression between normal and OA chondrocytes that are potentially under epigenetic regulation.

ORGANISM(S): Homo sapiens

PROVIDER: GSE64394 | GEO | 2015/06/30

SECONDARY ACCESSION(S): PRJNA270884

REPOSITORIES: GEO

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Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes [methylation]

2015-06-30 | GSE64393 | GEO

Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes [methylation]

2015-06-30 | E-GEOD-64393 | biostudies-arrayexpress

Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes [expression]

Project description:Examination of the genome-wide distribution of 5hmC in osteoarthritic chondrocytes compared to normal chondrocytes in order to elucidate the effect on OA-specific gene expression. 5hmC-sequencing was performed and data was compared with microarray gene expression data to identify genes with differential expression between normal and OA chondrocytes that are potentially under epigenetic regulation. Gene expression patterns were examined by comparing the 5 normal samples to the 2 OA samples to assess the changing expression profiles between normal and OA chondrocytes. We analyzed the changes in gene expression in OA; genes with a fold-change ≥ or ≤1.5 or 1.2, with a difference in intensity of >100 and within the lower 90% confidence bound, were selected.

2015-06-30 | E-GEOD-64394 | biostudies-arrayexpress

Ribosomal RNA 2’-O-methylation profile of human articular chondrocytes exposed to an osteoarthritic environment

Project description:We used chondrocytes exposed to osteoarthritic synovial fluid as a chronic disease model to study the effects of a chronic disease microenvironment on 2’-O-me rRNA heterogeneity. Human non-OA human articular chondrocytes (5 individual donors) were cultured either in the presence of OA-SF (20% (v/v), pool of 14 donors) or in a normal culture medium and were refreshed every other day. After 14 days of culture, RNA was isolated for 2’-O-methylation profiling of ribosomal RNAs.

2022-03-05 | E-MTAB-11469 | biostudies-arrayexpress

Genome wide-DNA methylation analysis of articular chondrocytes reveals a cluster of osteoarthritic patients (methylation)

Project description:The aim of this study is to identify, for the first time, the genome-wide DNA methylation profiles of human articular chondrocytes from OA and healtly cartilage samples. Genome wide DNA methylation profiling of normal and osteoarthritic samples. The Illumina Infinium 27k Human DNA methylation Beadchip v1.2 was used to obtain DNA methylation profiles across approximately 27,000 CpGs in cartilage knee samples. Samples included 18 healthy controls and 23 OA patients.

2013-04-01 | GSE43269 | GEO

Genome wide-DNA methylation analysis of articular chondrocytes reveals a cluster of osteoarthritic patients (methylation)

2013-04-01 | E-GEOD-43269 | biostudies-arrayexpress

Real-time quantitative PCR analysis of UPR genes in human normal and osteoarthritic chondrocytes

Project description:Human chondrocytes were obtained from the cartilage of femoral condyles and tibial plateaus from individuals within 12 hours of death (normal) and from patients undergoing total knee arthroplasty (osteoarthritic, OA). The chondrocytes were released from the cartilage, seeded at high density, and cultured in Dulbecco’s modified Eagle’s medium supplemented with 10% heat-inactivated fetal bovine serum and an antibiotic mixture (100 units/ml penicillin base and 100 μg/ml streptomycin base) at 37°C in a humidified atmosphere of 5% CO2/95% air. Total RNA was extracted from the primary chondrocytes and processed for qPCR according to the manufacturer's instructions (SA Biosciences RT2 Profiler PCR Array PAHS-089Z).

2015-10-06 | GSE73749 | GEO

Osteoarthritic chondrocytes undergo a glycolysis-related metabolic switch upon exposure to IL-1β or TNF-α

Project description:Inflammation, which is mainly sustained by pro-inflammatory cytokines such as IL-1β, TNF-α, and IL-6, plays an important role in osteoarthritis progression. However, the therapeutic failures of recent clinical trials evaluating anti-IL-1, anti-TNF, and anti-IL-6 drugs highlight the lack of overall understanding of the effects of these cytokines on chondrocytes. Here, we generated a comprehensive transcriptomic and proteomic dataset of osteoarthritic chondrocytes treated with these cytokines to describe their pro-inflammatory signature and compare it to the transcriptome of non-osteoarthritic chondrocytes. We first identified specific dysregulation of metabolic-related genes in OA chondrocytes. A metabolic shift, toward increased glycolysis at the expense of mitochondrial respiration, was specifically identified and confirmed by Seahorse® assay of osteoarthritic chondrocytes treated with IL-1β or TNF-α. These data show a strong association between inflammation and metabolism, indicating that understanding metabolic dysregulations should be a focus of future investigations for the design of therapies for osteoarthritis.

2023-05-20 | GSE215039 | GEO

Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes

Project description:Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes

| PRJNA270883 | ENA

Real-time quantitative PCR analysis of UPR genes in human osteoarthritic chondrocytes specimens treated with thapsigargin compared to the untreated (control) chondrocytes

Project description:Human osteoarthritic (OA) chondrocytes were obtained from the cartilage of femoral condyles and tibial plateaus from three patients undergoing total knee arthroplasty. The chondrocytes were released from the cartilage, seeded at high density, and cultured in Dulbecco’s modified Eagle’s medium supplemented with 10% heat-inactivated fetal bovine serum and an antibiotic mixture (100 units/ml penicillin base and 100 μg/ml streptomycin base) at 37°C in a humidified atmosphere of 5% CO2/95% air. The chondrocytes from each of the three donors were left untreated (control) and treated with thapsigargin (50nM for 20hours).Total RNA was extracted from the chondrocytes and processed for qPCR according to the manufacturer's instructions (SA Biosciences RT2 Profiler PCR Array PAHS-089Z).

2015-10-06 | GSE73746 | GEO

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